Automatic train stop and signal.



J. A. DBMERS. AUTOMATIC TRAIN STOP AND SIGNAL.

' nrmqumn rum) mus, 1910.

. Patented May 21, 1912.

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J. A. DEMBRS. AUTOMATIC TR AIN STOP AND SIGNAL. I

Patented May 21, 1912.

a sunn'rs-sunm z APPLICATION FILED MAY 9,-1910.

Y Attorneys JOSEPH ALPHONSE DEMERS, on sr, nor/inertia QUEBEC, a umna.

AUTOMATIIG TRAINIYSTOYP Ann SIGNAL? Specification of Letters Patent.

Application filefi May 9, 1910.- SeriaLNo. 560,338,

Te -all tuho'mit may concern:

Be it knownlthat L IOsEPHIALPHO sE DEMERS, a subject of the King'of Great Brit-.

ain 'residin at St Romuald count-v of ,Le'vis, in" th'Province o'f'Quebec, Canada,.

have invented-certain new 'and' useful. I111- -provements 1n,A utomat1c Tram Stops and Signals; and I do hereby declare that the:

following is a' -full clear, and exact ,d'escrip tion-of the invention, such as will enable "others" skilled in theart to-Which it appertains to: make and. use thesame.

v I The invention to .be hereinafter described relates to railways, and particularlyto automatic; mechanisms for signaling, andapply- 'ing the brakes, at predetermined points along the track.

. In order to more clearly disclose the construot-ion, operation and use of the invention,

reference should be had to the accompanying drawlngs. forming part of the present application.

Throughout the several figures of the drawings, like reference characters designate "the sarneparts .lnthedraw'ngsf Figurel a vertical sectional view through the casing, showing.

the operating mechanism in elevation; Fig.

2 is-a vertical cross section on line 22 of Fig. '1, looking in the direct-ion of the'arrow; Fig. is an enlarged detail of the lever holding device; Fig. 4: is a side elevation of the device for operatingthe signal-actuating lever; Fig.- 5 is aside elevation of the devide for operating the brake .actuating lever; Fig. 6 is'aside elevation ofa special trip mechan sm-for operating the actuating levers; 'Figx-Tis a plan view of Fii. 6; and.

Fig 8 is aside elevation of a modi ed form of actuating device for the air brakes;

YTheinainobjects of the inventlon are to provide a simple and efficient mechanism for" automatically sounding'the signal, and setting, the brakes, as the train is passing ,a predeternrlned-pointlinb the track,-and to aco'o'mplis'h these .operationsentirely independently of the. engineer or. any other person. t I Thewhole actuating mechanism 1s adapt- -ed to be mounted'inaicase or boxl', which i'nay bejconveniently suspended from the lin der fraine of the tender. Withm this case or box is .pivotallymountetl a. lever 2, the short end ofwhich projects from the bot toiniof-the 150x 'and't-ravelsat' a short dis which is passed over a pulley el. and con- .or other suitable signal in the cab of-tho engine. '(lonsequently, whenever the lower end. of the lever 21s engaged by one of the it will be swung to position to' operatethe signal. As soon, as the-signal has been mounted in the case or box 1. The upper To the lower .end of'the lever is pivotally connected a. sliding bar or rodlS' adapted to beengaged andoperated by a trip device 19 pivotallv mounted adjacent the track.

at-ftheir' opposite'ends respectively to an eye "22 extending from the trip19 below its pivmany in operative posit-ion, while at theby the bar 1-8as thetrain advances. new ever, before the tension'of'.thesprings 21-is' overcommthe' bar' 18 Will'be driven rearswinging of the lever 15; and consequentop eration of the air brake valve. The' mp 19,

by the springs 21'.

and l5 dperate successively, the trips 6 and. 19 are placed at a considerable; distance,

enga e the lever2 'befo'rdthe trip en'- gages the rod 18;

. A somewhat simpleruform. of meehanisrn foroperating the. valve ofthe air. brake pipe is shownin-Fig: -8. Bythe construction shownin Fig-.8, a single=rod-25 is substituted :for'the. lever 15, link 16, and rod18 This'rod '25 is slidably mounted instraps "26' secured to theflinner wall-of the case, and has a sl-idingpivotal connection'with tween the upperstrap nnd'collar, acting to :taiice abovethetrack.' To the upper end of Patented May 21,1912.

this lever is connected a cord or rope"3j.

trip'devices 6,niounted ad jaccnt the track,"

sounded, the brakes should be applied. To effect this, a second-lever, 15 is pivotally- This trip device is held in upright'position by means of springs 21. which are conn'e'cte'd;

otal point, and 'tojth ,uptu'rn'edends of a plate 23 in which the trip ismounted. This I yielding connection holds the trip-19 -norsame timezpermitting'it tobe forced doivn the handle of the. air brake valve' Acollar 27 is ,;formed on'the rod 25, and a spring. 28 is coiled about the rodnn dhrrnnged be-.1j 1'0 'keep therodnormallyinits lowered position; i

The lower endof the rod is provided wi h nected in any well known manner to gong end of this lever-is connected by a linklG to the handle of the valve. controlling passage. of airthrough the pipes 17 ofth'e air brakes,

Ivardlv'in the casing sufficiently farfto cause 9O ofcours'e, is returned to-opera'tiveposition-[- Inorderflt0 have the 'act-uating levers i I 95 apart, andflso afl'anged'that the trip 6- will yvided witha hinge joint. 31 and a cord3 2 iis eonnectedto the lowest part and passed ,.over suitable pulleys and into the engineers cab"with-1n easy reach. By pulling on this lof cord, he can swing the lower end of the rod:

25 upward to inoperative position and out of the path of the inclined plate 30.: The

bac'kof the hinge joint is braced by a block .33, to prevent itsgiving', when the, roller 29 meets the incline .80. The rod is pro-,

:vided with a pin 34, adapted to engage a leaf spring 35.

As the rod 25'is torced'i 'p ,ward,-the pin,v 34 will be forced over the ,Qben'd in thespring 35 and, thespring will holdtlie rod raised and keepthe brakes set.

' "-lf nprder to raise the bar 18 t inop c zposition, "a'frope 32, corresp d g t the-l rope 32 of Fig. 8, is used. This is.'con- .=--n'ected'to the bar, passed up over pulleys '-32". Thefbar lSinay be held in raised posi-' ,tion by thespring 35 in the same manneras the rod 25Jis held in "raised position; A pin 'or-rod 100 carried by the lever 2 and adapted to engage the-back of the lever'15 to limit the :forward position of the operative-position, hesiinplv" pulls the rope bar 18.

g Emei gency t rip devices may be placed at jpbi itsnear stations,- ifdesired, so that. they :I'n'ay be" set to automatically stop a trainer towarnflt-he engineen'in case of a in'iX-up in' ;despatches, or for other reasons. The

emergency trips correspond to the trip '19. How'ev-er, in order "to keep the trip normally inoperative, it is. inclosed with a box having 'a lid 40, This lid is swung down over the trip 19 and secured in place by a bolt 41 which engages a hook 42 secured to the under side I of the cover. This bolt is forjined'as a lever and fulcrumed in the casing at one side of ".the top' 40. To the free end of the bolt is secured; one end of theo erating wire or B6, .and'suinto the engineejris cab near his .seatt Iflie desires to. 'i-aise-thebar to invalve therefor, a 'casing,. Ja bar 'slidably in'ounted in said casing, alever. pivoted in cord 43, which is passed over suit-able rollers and securedto awind-ing drum 44 operated by pawland ratchet mechanism. O f. course, as soon as the boltis-disengaged'from the hook, the springs will drii' e the trip 19 and cover upward, so that the trip willv be in operative'position. Bolt- 41 isheld in operative position by "means jot a spring 90 having its 3 opposite ends S6 C'l11ed,freSp8G. 'tively,' to'a lug on the. under side of the cover plate, and to the bolt.

It is thought-that the operation and. use

of the invention will be clear from the preceding detailed description.

' Changes maybe niade'in the construction, I

arrangementand dispositioij -of the several parts of the invention, without in any way departing fi'oiii'thefield and .scopeof the same, and'it-is meant .to include all such within this application, wherein only ;pr.eterred. formshave been disclosed.

3 Having thus fully. described my invention, what I claim as 'new and desire to '.se-. cure by Letters- Patent, is

1. A device of the character described',,

comprising an air bi'ake pipe, a controlling said casing and connected to one end of said said controlling valve, means "for holding bar, connections between said levers and.

said bar .in inoperative position, and a trip adapted'to operate said bar.

2. A" device of he character described,

comprising an air brake pipe, a' controlling valve therein,'a casing,'a bar slidably mounttrolling valve, means for moving said bar to inoperative position, and. a trip adapted to operate said bar.

It- ,wit-ness whereof I have hereunto set my hand in the presence of two viti esses.

Josisr iALri oNs'E DEMERS. -lVitnessesr," a

J. A.';TOUSSAINT, R. PEAoooK. 

